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Thread: Gear repair

  1. #1
    Vyacheslav Nevolya Vyacheslav.Nevolya's Avatar
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    Gear repair

    Hi. Sometimes it's a very unpleasant situation when it's impossible to quickly find a new gear. I decided to restore the gear, maybe this is not the best way, but for some time it should work.

    Gear repair-img_20170623_143529.jpg

    I weld a damaged tooth with an electric arc welding

    Gear repair-img_20170623_145326.jpg

    Then after 10-15 minutes of working with this tool)))

    Gear repair-img_20170623_201034.jpg

    Result. The gear is almost new

    Gear repair-img_20170623_152738.jpg

    Gear repair-img_20170623_152751.jpg

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  3. #2
    olderdan's Avatar
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    Another brilliant exercise in resourcefulness, well done.
    I would be interested in why such robust gears got damaged, I seem to remember they were from a motorcycle gearbox.
    Regards
    Olderdan

  4. #3
    Frank S's Avatar
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    Good job, nothing wrong with the method.
    I used to have to sit for hours and sometimes more than 2 or 3 days at time building up the worn teeth on 3 and 4 ft diameter gears for oil field equipment then spend days as in several hand grinding the profiles of the very large teeth to some semblance of what I thought the original profile should be. A 150 lb 20 tooth pinion gear was bad enough but the 2000 lb ring gear for a 30" rotary table meant a minimum of 100 lbs of electrodes
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

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  6. #4

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    Quote Originally Posted by Frank S View Post
    A 150 lb 20 tooth pinion gear was bad enough but the 2000 lb ring gear for a 30" rotary table meant a minimum of 100 lbs of electrodes
    Whoa! ---Joe

  7. #5
    Vyacheslav Nevolya Vyacheslav.Nevolya's Avatar
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    Quote Originally Posted by olderdan View Post
    I would be interested in why such robust gears got damaged, I seem to remember they were from a motorcycle gearbox.
    Olderdan
    Gears from a motorcycle and a car. The reason for the breakage is very simple, There was a nut in the gearbox, it hit the tooth and locked the gears.

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    olderdan (06-24-2017), Papa Smurf (06-26-2017), Paul Jones (06-24-2017), PJs (06-22-2018)

  9. #6
    Content Editor DIYer's Avatar
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    Thanks Vyacheslav.Nevolya! We've added your Gear Repair Method to our Miscellaneous category,
    as well as to your builder page: Vyacheslav.Nevolya's Homemade Tools. Your receipt:




  10. #7

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    Very nice work.

  11. #8
    VinnieL's Avatar
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    Years ago I had a steering gear in a collector I.H. Cub tractor with a broken tooth. This was before I had a welder etc. Took it to a machine shop and that was how they fixed it. It outlasted the rest of the tractor.


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